Search results for: '实验室地面出现溢水的主要原因之一是忘记关闭水龙头，尤其停水时忘关水龙头，因此离开实验室时要认真检查。 (2 分)A正确B错误'
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Seco Dual Scale Aluminum Builder's Rod - 5 Meters/16 Feet - 7341-52$90.73This rod has a standard ‘E’ pattern
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Seco Aluminum Leveling Rod - 16ft/5m / 5-pc / inch Grad - 7321-50$86.41This 5-section aluminum leveling rod is made of a light and durable alloy
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Seco Aluminum Leveling Rod - 9ft/3m / 3-pc / inch Grad - 7321-30$67.71This 3-section aluminum leveling rod is made of a light and durable alloy
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Seco Aluminum Leveling Rod - 13ft/4m / 4-pc / inch Grad - 7321-40$80.92This 4-section aluminum leveling rod is made of a light and durable alloy
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Johnson Level 13ft/4m Aluminum Grade Rod - 40-6310$68.63Johnson Level 13' Aluminum Grade Rod for excavating ditches and trenches and with a Johnson laser detector.
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Johnson Level 16ft/5m Aluminum Grade Rod - 40-6320$86.44Johnson Level 16' Aluminum Grade Rod is perfect to use while excavating with a Johnson laser level detector.
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Johnson Level 8ft/2m Aluminum Grade Rod - 40-6862$61.38Johnson Level's 8' Aluminum Grade Rod can be used with a laser detector or transit level and is perfect for pouring concrete.
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LaserLine Laser Rod 10' + inches cut/fill only - GR1000ICF$202.50The Direct Reading or True Elevation (also known as Lenker style) is a grade rod with a movable tape face allowing you to set the actual benchmark elevation, or any elevation, above or below the bench into the rod. The actual true elevation above sea level is read on these rods, thus eliminating errors caused by adding or subtracting. Since NO math is involved, grade shots are much faster than conventional style rods.
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LaserLine 10' Direct Read Lenker Rod inches - GR1000I$202.50The Direct Reading or True Elevation (also known as Lenker style) is a grade rod with a movable tape face allowing you to set the actual benchmark elevation, or any elevation, above or below the bench into the rod. The actual true elevation above sea level is read on these rods, thus eliminating errors caused by adding or subtracting. Since NO math is involved, grade shots are much faster than conventional style rods.
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