---
product_id: 16904815
title: "Sper Scientific 736740 Mason's Hygrometer"
brand: "sper scientific"
price: "480 kr"
currency: NOK
in_stock: true
category: "Sper Scientific"
url: https://www.desertcart.no/products/16904815-sper-scientific-736740-masons-hygrometer
store_origin: NO
region: Norway
---

# Wet bulb & dry bulb humidity measurement Safe, vivid red liquid display Dual temp scales (-10/50°C & 10/120°F) Sper Scientific 736740 Mason's Hygrometer

**Brand:** sper scientific
**Price:** 480 kr
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the climate curve with vintage precision and modern safety!

## Quick Answers

- **What is this?** Sper Scientific 736740 Mason's Hygrometer by sper scientific
- **How much does it cost?** 480 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/16904815-sper-scientific-736740-masons-hygrometer)

## Best For

- sper scientific enthusiasts

## Why This Product

- Trusted sper scientific brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Mercury-Free Safety:** Bright red liquid ensures clear visibility without toxic mercury risks—eco-conscious and user-friendly.
- • **Battery-Free Operation:** Always ready when you are—no batteries needed means zero downtime and zero hassle.
- • **Sleek Tabletop Elegance:** Compact, lightweight design fits perfectly on your desk or shelf, blending function with style.
- • **Classic Wet & Dry Bulb Design:** Accurately measures humidity by comparing two temperature readings—trusted science, timeless reliability.
- • **Precision Dual-Scale Readings:** Effortlessly switch between Celsius and Fahrenheit for versatile monitoring.

## Overview

The Sper Scientific 736740 Mason's Hygrometer offers precise humidity measurement using a classic wet and dry bulb system with dual temperature scales (-10/50°C and 10/120°F). Featuring a safe red liquid display instead of mercury, it operates battery-free and is designed for convenient tabletop use, making it an essential tool for professionals seeking reliable environmental data with a touch of timeless elegance.

## Description

Measure Humidity - Mason's Hygrometer - Red Liquid. One thermometer bulb is kept constantly wet by a siphon reservoir while the other gives a dry temperature reading. Humidity is obtained by comparing the two readings on the enclosed chart. The red liquid masons hygrometer uses a safe and easy to read red liquid in place of the usual mercury. Dual scales of -10/50°C and 10/120°F.

## Features

- Measure Humidity - Mason's Hygrometer - Red Liquid
- Dual scales of -10/50°C and 10/120°F
- High quality
- Red Liquid

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00N5IRZS4 |
| Battery Description | No batteries required |
| Best Sellers Rank | #178,361 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #85 in Weather Hygrometers |
| Brand Name | Sper Scientific |
| Color | White |
| Customer Reviews | 3.8 3.8 out of 5 stars (41) |
| Included Components | Hygrometer |
| Item Weight | 3.8 ounces |
| Manufacturer | Sper Scientific |
| Model | 736740 |
| Mounting Type | Tabletop |
| Number of Items | 1 |
| Part Number | 736740 |
| Temperature Accuracy | 5.56 |
| UPC | 077754662617 696738569263 |
| Unit Count | 1 Count |
| Upper Temperature Range | 120 °F |

## Product Details

- **Battery Description:** No batteries required
- **Brand:** Sper Scientific
- **Color:** White
- **Item Weight:** 3.8 ounces
- **Mounting Type:** Tabletop

## Images

![Sper Scientific 736740 Mason's Hygrometer - Image 1](https://m.media-amazon.com/images/I/31O+y-t6IhL.jpg)
![Sper Scientific 736740 Mason's Hygrometer - Image 2](https://m.media-amazon.com/images/I/41sVcDjMisL.jpg)
![Sper Scientific 736740 Mason's Hygrometer - Image 3](https://m.media-amazon.com/images/I/51jenXQTYgL.jpg)
![Sper Scientific 736740 Mason's Hygrometer - Image 4](https://m.media-amazon.com/images/I/51ZIEuKgNPL.jpg)
![Sper Scientific 736740 Mason's Hygrometer - Image 5](https://m.media-amazon.com/images/I/5155HMjUU+L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How often do you need to refill the bottle at different humidity levels?**
A: Please note I added a 30mm fan to move air across the wick. With humidity the 45% range and the fan operating, I need to add water about every 4 days.

## Frequently Bought Together

- Sper Scientific 736740 Mason's Hygrometer
- Apera Instruments Premium-Series PH60S Food pH Pocket Tester Kit, Swiss Spear pH Electrode, ±0.01 pH Accuracy, -2.00-16.00 pH Range (AI313)
- Weigh Boats Medium (100ml, 125 Pack) Disposable Plastic Trays for Scale, Anti-Static Square Tray Weighing Dishes, Polystyrene Lab Dish for Powder Weight, Mixing Epoxy, Food Sample Container, Pour Boat

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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-10-12*